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可转移元素和指蛋白之间的混合与匹配推动了基因和监管方面的创新
Olga Rosspopoff1, Didier Trono1, Cédric Feschotte2
1School of Life Sciences, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland.
Current opinion in genetics & development
|November 15, 2025
概括
可转移元素 (TE) 和KRAB指蛋白 (ZFPs) 在整个元动物进化过程中共同演变. 这种相互作用服了TE,将它们整合到基因网络中,并通过创建新的调节蛋白来推动生物创新.
科学领域:
- 基因组学和分子进化
- 基因规则 基因规则
- 细胞基因组动力学
背景情况:
- 可转移元素 (TE) 是真核基因组的主要组成部分,影响基因组结构和进化.
- 指基因,特别是KRAB指蛋白 (ZFPs),在基因组调节中起着至关重要的作用.
- 人类基因组的很大一部分由TE组成,KRAB-ZFPs与大多数TE亚家族结合.
研究的目的:
- 为了研究可转移元素和指基因之间的共同进化关系.
- 阐明KRAB-ZFPs在调节TE活动中的作用及其融入宿主基因组中的作用.
- 了解TE和ZFP之间的相互作用如何为生物创新做出了贡献.
主要方法:
- 在元动物和脊椎动物进化过程中进行比较基因组学分析.
- 对TE-ZFP结合部位和相互作用的生物信息分析.
- 功能性研究 (隐含) 评估KRAB-ZFPs对TE的监管影响.
主要成果:
- 在整个元动物进化过程中,TEs和指基因之间有记录的共同进化.
- 在人类中,几乎所有的TE亚家族都与KRAB-ZFPs结合,这些ZFPs主要抑制它们的cis-regulatory活动.
- 在脊椎动物进化过程中,TE蛋白域多次与ZFP融合,产生新的调节蛋白.
结论:
- TEs和KRAB-ZFP之间的相互作用是基因组调节和进化的基本机制.
- 这种相互作用在将TE整合到宿主基因调节网络中起到了关键作用.
- TE-ZFP关系一直是脊椎动物生物创新的重要驱动力.
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